GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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“A GP has a first term of 11 and a common ratio of 2".Which recursive formula is correct?
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Tn+1 = Tn + 2, T1 = 1
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Tn+1 = Tn + 2, T1 = 11
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Tn+1 = 2Tn, T1 = 1
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Tn+1 = 2Tn, T1 = 11
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Explanation:
Detailed explanation-1: -The formula to find the sum of infinite geometric progression is S ∞ = a/(1 – r), where a is the first term and r is the common ratio.
Detailed explanation-2: -A recursive formula for a geometric sequence with common ratio r is given by an=ran–1 for n≥2. As with any recursive formula, the initial term of the sequence must be given.
Detailed explanation-3: -There are five terms in this Geometric Progression. if 1/2 is the second term and the ratio is 1/4, the first term must be 2.
There is 1 question to complete.